Hacker News Board Hacker News, browsed like a classic message board
Live data from Hacker News

Show HN: Awesome J2ME

github.com

Post reply on HN
Print view View original

1–10 of 59 posts

Show HN: Awesome J2ME

#1

Post by catstor »

An awesome list about Java platform Micro edition(J2ME). Documentation, academic papers, tutorials, communities, IDEs, SDKs, emulators, apps, video games. J2ME is a Java specification designed for old keypad phones and PDAs. MIDP, which is built upon CLDC, is used to create Midlets, which have `.jad` or `.jar` extension, and run on platforms like old keypad phones, Symbian and PDAs. MIDP is supported till Java ME SDK 3.4.

Show HN: Awesome J2ME
github.com

Re: Show HN: Awesome J2ME

#2

Post by mooreds »

Wow, brings back memories!

I used j2me in the early 2000s to make a mobile app where people could find home data. My first startup experience. Learned a lot but didn't earn a lot.

Wrote a paper about MIDP here: https://www.mooreds.com/midp/midp.html . No idea if it is still relevant 20 years on.

Re: Show HN: Awesome J2ME

#3

Post by catstor »

mooreds wrote: post #2

Wow, brings back memories! I used j2me in the early 2000s to make a mobile app where people could find home data. My first startup experience. Learned a lot but didn't earn a lot. Wrote a paper about MIDP here: https://www.mooreds.com/midp/midp.html . No idea if it is still relevant 20 years on.

I am glad it was helpful.

Thanks for the paper as well. It explains concepts very clearly with a real-life problem statement. Added it to Awesome J2ME.

Re: Show HN: Awesome J2ME

#6

Post by yanslookup »

The first thing I ever wrote that other people used was a j2me app freshman year in college. It was a power hour app that played a random simpsons .wav every minute.

I was a pretty poor CS student, in hindsight I'm surprised I got it to work.

Re: Show HN: Awesome J2ME

#9

Post by invalidname »

ptx wrote: post #8
invalidname wrote: post #5

No LWUIT?

LWUIT wasn't particularly awesome, in my opinion. It was enormous and hideous and couldn't integrate with the native cut-and-paste functionality offered by some phones.

Well... 64kb isn't exactly enormous for the type of functionality it offered. It did support copy and paste you just had to enter editing mode. The underlying APIs didn't offer access to copy and paste directly.

Having said that, it doesn't really matter if you didn't like it. It was a pretty big part of the J2ME ecosystem at the time and it's a huge omission.

Post reply on HN